Satellite images help identify large areas of pollution caused by fires, dust or sand storms, volcanic eruptions, large industrial sources, or the transport of man-made pollution from other regions.

James Naughtie examines the complexities of America's identity as a nation of immigrants.

A daytime morning “chatfest” featuring a team of dynamic and diverse women, discussing the most exciting events of the day.

Clouds from infrared image combined with static colour image of surface. False-colour infrared image with colour-coded temperature ranges and map overlay. Raw infrared image with map overlay. Raw ...

The National Oceanic and Atmospheric Administration (NOAA) is joining in, asking social media users to help choose their "most compelling" satellite ... things beat the view of a good sunset ...